Discoloration on seedling

[Skydiver]

Found the post I read the other day and the word is variegated

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I agree 100%. Surprised it’s not symmetrical n the other side. This is just genetics, and nothing you can do. I had a Super Lemon Haze that had a variegated leaf, just on half of the fan leaves. When I cloned it, I forgot to label one, figured out which one that one was real quick. Realistically the rest of your plant looks great, well fed. Generally deficiencies show symmetrically and uniformly across the plant. This is why I agree with the variegation.

Maybe that’s what your seeing…